Hydroelectric power generation device using multistage cascade structure

Abstract

The present invention relates to a hydroelectric power generation device using a multistage cascade structure. The hydroelectric power generation device includes: a support (10) having a predetermined length and installed in a vertical direction; a plurality of waterwheels (20) each including a horizontal axle (21) rotatably installed on the support (10) and a plurality of buckets (22) radially arranged around the axle (21); upper and lower water tanks (30, 40) respectively installed on upper and lower portions of the support (10) and respectively containing predetermined amounts of water; a pump (50) installed in the lower water tank (40) to supply water from the lower water tank (40) to the upper water tank (30); generators (60) respectively installed on the axles (21) of the waterwheels (20); and a charging battery (70) configured to store electricity produced by the generators (60). Thus, according to the present invention, electricity can be stably and effectively produced.

1 . A hydroelectric power generation device using a multistage cascade structure, the hydroelectric power generation device comprising:
 a support ( 10 ) having a predetermined length and installed in a vertical direction;   a plurality of waterwheels ( 20 ) each comprising a horizontal axle ( 21 ) rotatably installed on the support ( 10 ) and a plurality of buckets ( 22 ) radially arranged around the axle ( 21 );   an upper water tank ( 30 ) and a lower water tank ( 40 ) that are respectively installed on an upper portion and lower portion of the support ( 10 ) and respectively contain predetermined amounts of water;   a pump ( 50 ) installed in the lower water tank ( 40 ) to supply water contained in the lower water tank ( 40 ) to the upper water tank ( 30 );   generators ( 60 ) respectively installed on the axles ( 21 ) of the plurality of waterwheels ( 20 ); and   a charging battery ( 70 ) configured to store electricity produced by the generators ( 60 ).   
     
     
         2 . The hydroelectric power generation device of  claim 1 , wherein a pair of water level sensors ( 31 ,  32 ) are installed at the upper water tank ( 30 ), and an operation of the pump ( 50 ) is controlled such that a predetermined amount of water is maintained in the upper water tank ( 30 ) based on information about a highest water level and a lowest water level detected by the pair of water level sensors ( 31 ,  32 ). 
     
     
         3 . The hydroelectric power generation device of  claim 1  or  2 , wherein water collectors ( 23 ) are installed between the plurality of waterwheels ( 20 ) at opposite sides to guide water falling and passing through the plurality of waterwheels ( 20 ). 
     
     
         4 . The hydroelectric power generation device of  claim 1  or  2 , wherein pulleys ( 24 ,  62 ) or sprockets are respectively installed on the axles ( 21 ) of the plurality of waterwheels ( 20 ) and axles ( 61 ) of the generators ( 60 ), and the pulleys ( 24 ,  62 ) or the sprockets interact with each other through V-belts (B) or chains.